68471998620 has 48 divisors (see below), whose sum is σ = 191780265600. Its totient is φ = 18253612096.

The previous prime is 68471998603. The next prime is 68471998649. The reversal of 68471998620 is 2689917486.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24979 + ... + 370901.

It is an arithmetic number, because the mean of its divisors is an integer number (3995422200).

Almost surely, 2^68471998620 is an apocalyptic number.

68471998620 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68471998620 is an abundant number, since it is smaller than the sum of its proper divisors (123308266980).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68471998620 is a wasteful number, since it uses less digits than its factorization.

68471998620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349234 (or 349232 counting only the distinct ones).

The product of its (nonzero) digits is 10450944, while the sum is 60.

The spelling of 68471998620 in words is "sixty-eight billion, four hundred seventy-one million, nine hundred ninety-eight thousand, six hundred twenty".